I don't know that there is an "official" name, but following the Greek model of most phobia names, fear of circuses should be kuklophobia. Greek letters can be transliterated into English in more than one way, so other possible spellings would be kyklophobia or cyclophobia. "Circus" is actually Latin for "circle." The Greek word for a circle is "kyklos" and presumably that would have been their word for a circus except they didn't have circuses the way the Romans did.
The fear of clowns in known as Coulrophobia.
clown, lion, tiger, elephant
Scolionophobia is the fear of schools, whereas Didaskaleinophobia is the fear of going to school.
There does not appear to be a scientific name to describe the fear of cartoons.
Acrophobia is the fear of heights.
acrophobia
The fear of heights is known as acrophobia.
The irrational fear is called a phobia; the experience or object that triggers a phobia could be called a phobic experience or object.
the only phobia of the fear of crickets is crickephobia
Bebuphobia...that is the fear or phobia of blueberries.
To have a phobia is to have a fear.
Mud Phobia is the phobia (fear) of mud. Its called mysophobia, myso meaning mud and phobia meaning fear.
Atychiphobia (kakorrhaphiophobia, fear of failure, fear of failing, failure phobia).
Theophobia- the irrational fear of a god or deity. Remember its only a phobia if its an "irrational" fear, a normal healthy fear is not a phobia.
There is no medical term or phobia name for the fear of immigrants.However a similar phobia called Xenophobia is the fear of foreigners.
go to the circus
We use the term phobophobia to name the fear of fear or of phobias. (The word phobia comes from the Greek for fear.)
Hylephobia is the name of the phobia related to the fear of materialism
Ballistophobia is the name of the phobia related to the fear of missiles